Box moving mechanism for looms



March 1, 1932. c. J. LINDEGREN BOX MOVING MECHANISM FOR LOOKS Filed June 3, 1951 2 Sheets-Sheet l JmIentor Caufl J'. \Jnclegren (lttbmegs R v 3 u 5 r! l ll I- ,7 I b a "X llllllllr O \J H W 5 3 Q! 1M 5 u I .1 z 0 B 6/ In] F 3 5 H O 1o b H u I w. NJ W. I I! a u. 7 :m R b R March 1, 1932. c. J. LINDEGREN 1,847,615

v BOX "(WING IEGHANISI ,OR 1400's Filed June 3. 1931 2 Sheets-Sheet 2 FIE] 73 Jmfent or Car'\ 3. kmdegren )(M M Q tornegs Patented Mar. 1, 1932 UNITED STATES PATENT 'cARnJ. LINDEGREN, or PROVIDENCE, Rnonn ISLAND, ASSIGNOR ."rov .oRo MP'roN a; KNOWLES LOOM wonxs, or: WORCESTER, MASSACHUSETTS, A CORPORATION or MASSACHUSETTS BOX MOvING macmmsmrda Looms Application med um 3 1931. Serial its. 541,855.

This invention relates to drop b'ox looms and more particularly to the 'box moving mechanism. In the operationof such looms, a shuttle may become displaced or the vertical shifting of the boxes may be otherwise interfered with. It is accordingly desirable to provide a yielding or giveway connection which will permit the box liftingmecha-nisrn to be rendered inoperative in suchan event, without causing breakage of any parts of the mechanism. It is also'de'sirable that the yielding or giveway connection be capable of easy and accurate re-setting.

It is the general object of my invention to provide a box moving mechanism having an improved yielding or giveway connection embodied in its construction.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly set forth in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a side elevation of a loom having my invention embodied therein; I

Fig. 2 is an enlarged side elevation of the box moving mechanism;

Fig. 3 is a plan view of the mechanism shown in Fig. 2;

Fig. 4 is a detail sectional plan view taken along the line 1-4 in Fig. 2;

Fig. 5 is a detail sectional view,taken along the line 55 in Fig. 2, and

Fig. 6 is an enlarged front elevation of certain parts.

Referring to the drawings, I have shown portions of a loom, includinga loom side 10 and drop boxes 11 mounted on a lay 12 and vertically positioned by the usual lifter rod 13. The rod 13 is pivotally connected at 14: to the lower end of a link 15, by which the lifter rod 13 is connected to a lifter lever 16. The lever 16 rocks upon a floating pivot stud 17 and is provided with the usual counterweight 18. The pivot stud 17 of the lever 16 is mounted at an intermediate point in a lever 20, pivoted at 21 to a bracket 22 on the loom side 10.

The lifter lever 16 is connected at its rear end by a link 24 to aorank-pin 25 (Fig. 2)

mounted in the rear side of a cam 26 ,,sec.ured to one end of a back pinionshaft} 27' (Fig. 3') The lever 20i's similarly connected by a link 30 to a crank-pin 3l, s e cured in the rear face of a cam 32 fixed at one end of a front pinion shaft-33.

The shafts 27 and 33 are rotatable. in fixed bearings 35 and 36 (Fig; and are provided with mutilated pinion's 37 and 38 fixed to said shafts. A two-part intermittent driving gear 40 is loosely mounted on the usual cam or bottom shaft 41 of the 100m. The pinions 37' and 38. are-provided with sliding teeth 42 and 43 (Fig. 3) mounted 0 1 arms at 5 which projectaxi'ally toward the pinions from grooved collars 46 and 47. These collars 46Jand 47 are slidable on the pinion shafts 27 and 33' and areflp'ositioned by yoke In'embersLS and 49,.fix'ed' onplungers 50' slidable i fixed bearings 51- and yieldingl pressed -outwardby springs 52 (Fig.3). The plungers 50 are moved in the opposite direction'by cords or cables 53; connected to suit able pattern-controlled actuating mechanism.

When one of the plungers 50 is moved inward byone of the. cords 53,the corresponding sliding tGGthAQ 0'1 43 is thereby moved to inoperative position. When the 'plungers are moved outward by the springs 52,the teeth are correspondingly moved toop'erative positionftlfus enabling" thed'r'iving gearffO to partially rotate the corresponding pinion 37 or 38.

- Locking" plates 55' (F ig'. 2)' 'cooperate' with hub portions'ofth'e gear 40 to hold the pinion shafts 27 and 33 in predetermined positions, before and after actuation the driving aretO'. a A drivingcollar (Fig. 4)' -i's mounted on the outer end of the oamshaftfll' of the loom, in'ajpositi'on adjacenttothe driving gear 40,which, as previously stat ed,isloose on the cam shaft 451. The collar 60 is firmly secured to the shaft 41 in any convenient "man- Her 1178' y d ns m m r 62' (F 1 11: caved to P -1nm dei g nge ge Pertions 63. This locking member 62'is'n ountefd in slotor key-way of the collar 60 and may be forcedagainst the side of the shaft .5

4.1 by a set-screw 65'.

- 5 cam shaft 41 makes only one revolution for This type of locking member has been found very efiective and convenient as a means for attaching the collar 60 to the shaft 41, as the collar is held firmly, both axially and angularly, by the locking member 62, and no spot or key-way on the shaft fl is required. I

A plunger 70 (Fig. 4-) is mounted in a recess 71 in thecollar 60, ina position parallel preferably conical and of a corresponding angle. v

By suitably selecting the angle of the conicalportion of the plunger and by providing a spring? 2 of suitable strength, the gear 40 is effectually rotated by the driving shaft 41 through this giveway connection, but the parts will yield before breakage if movement of the drop boxes or any part of the box-moving mechanism is prevented.

The parts are easily re-set by rotatingthe cam shaft 41 until the plunger 70 returns to its recess 80. As only one recess 80 is proend face of said driving gear, thereby forming a give-way connection between said driving shaft and driving gear.

2. In a loom having vertically shifting drop boxes and a lifter rod and lifterlever, asso-. ciated therewith, a box-moving mechanism comprising links connected to move-and position said lifter lever, crank arms for said links, pinion shafts for'said arms, mutilated pinions on saidpinion shafts, an intermittent driving gear, means to selectively engage said pinions with said driving gear, a driving shaft on which said driving gear is loosely mounted, a collar fixed to said shaft adjacent said'driving gear, a plunger mounted in said collar and yieldingly movable toward the face ofsaid gear in a line parallel to the axis of said shaft, and a spring for'said plunger, the outer end of said plunger being conical at an angle of substantially 60 and seating in a conical recess of similar angle in the adjacent end face of said driving gear, thereby forming a giveway connection between said driving shaft and driving gear.

In testimony whereof I have hereunto affixed my signature.

V CARL J .c LINDEGREN.

vided in the face of the gear 40, and as the two movements of the lay 12, the parts are always in predetermined relation when the yielding connection is restored. I

The give-way connection thus provided is formed of few and relatively inexpensive parts and is particularly desirable on ac,- count of the very small space required for its installation and use. 7 V V V Having thus described my invention and the advantages thereof, I do not Wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. In a loom having vertically shifting drop boxes and a lifter rod and lifter lever associated therewith, a box moving mechanism comprising links connected to move and position said lifter lever, crank arms for said links, pinion shafts for said arms, mutilated pinions on said pinion shafts, an intermittent driving gear,'means to selectively engage said'pinions with said driving gear, a driving shaft on which said driving gear is loosely mounted, a collar fixed to-said shaft adjacent said driving gear, aiplunger mounted in said collar and yieldingly movable to-c.

ward the face of said gear in a line parallel to the axis of said shaft, and a spring for said plunger, the outer end of said plungerbeing conical and seating in a recess in the adjacent 

